If Na₂HPO₄ is added to water, what other compound could also be added in order to make a buffered solution? A)H₃PO₄ B)NaHPO₄ C)NaH₂PO₄ D)Na₂PO₃ E)NaCl

Question

Quizplus · Accepted Answer

A buffered solution requires a weak acid and its conjugate base or a weak base and its conjugate acid. Na₂HPO₄ is a strong acid and strong base, so it cannot act as a buffer on its own. NaHPO₄ is a strong base and cannot act as a buffer. Na₂PO₃ is a strong acid and cannot act as a buffer. NaCl is a salt and does not contain a weak acid or base. The only option that contains a weak acid and its conjugate base is NaH₂PO₄, so it is the best choice for making a buffered solution.

If Na2HPO4 Is Added to Water, What Other Compound Could

If Na₂HPO₄ Is Added to Water, What Other Compound Could